A customer has asked us to completely remove them from our database, how do I do this?

If the customer (or any of their tenants) have ever had an invoice raised then you will not be able to delete them from CommuSoft as the HMRC require you keep invoices for 7 years. You can however set them as dormant. To do that go to the customer screen and click on 'active' twice until it changes to dormant. You will want to repeat this process for each tenant.